Gaya APA
Maxwell, J, C.
(2017).
The 21 Irrefutable Laws of Leadership
.
Surabaya:
PT. Menuju Insan Cemerlang.
Gaya MLA
Maxwell, John, C..
"The 21 Irrefutable Laws of Leadership".
Surabaya:
PT. Menuju Insan Cemerlang,
2017.
Text.